TABLE OF CONTENTS COMPONENTS AND REPAIR MANUAL. MODEL McL-12HB ZIPPER EARTH BORING MACHINE. For Machine Serial No. 12HB And Higher

Transcription

1 COMPONENTS AND REPAIR MANUAL For Machine Serial No. 12HB And Higher MODEL EARTH BORING MACHINE PART NO. HD00000 Repair Manual Par art t No.:.: E Machine Serial # Purchased & Serviced Thru: Purchase Date: TABLE OF CONTENTS Specs & Maintenance...Section 1 Operation & Safety Manual / Hazard Alert Decal Placement...Section 2 Carriage Assembly...Section 3 Dog Plate Assembly...Section 4 Master Track Assembly...Section 5 Hoses & Fittings...Section 6 Hydraulic Controls and Components...Section 7 Repair Instructions...Section 8 Warranty Statement & Return Goods Policy...Section by McLaughlin Group, Inc., reprinted 2000 All rights reserved. No part of this manual may be reproduced in any form or by any means without prior permission of McLaughlin Group, Inc. Revision Date: 04.03

2 SPECS & MAINTENANCE SPECIFICATIONS OF McL-12HB EARTH BORING MACHINE Tunnel Diameter Free or Cased Bore 3-12 (8-30 cm) Chain Final Drive Hex Size 13/16 (2.06 cm) (customer to specify) 1-1/8 (2.85 cm) 1-3/8 (3.50 cm) 1-5/8 (4.12 cm) Dimensions Carriage and Pusher Centerline Height 9-1/2 (24.1 cm) Width 26 (66.0 cm) Height 44 (111.8 cm) Weight (Less Dog Plate) 320 lbs. (145 kg) Weight (Dog Plate) 40 lbs. (18 kg) Master Track For 4 Augers Length 7 (213 cm) For 3 Augers Length 6 (183 cm) Weight 85 lbs. (39 kg) Extension Track Length 6 (183 cm) Weight 75 lbs. (34 kg) Performance Advance 2500 PSI 24,500 lbs. (109 kn) Drive Chuck 20 GPM (Forward & Reverse) 120 RPM Drive Chuck 2500 PSI (Forward & Reverse) 1030 ft. * lbs. (1340 Nm) Quick Disconnects Parker NS FP and NS FP Female disconnect ON MACHINE is the high pressure side of system. Specifications are subject to change without notice. All weights and dimensions given are approximate. Exact measurements should be verified if required. MAINTENANCE INSTRUCTIONS Review the Engine and Operation Manuals supplied with the power source before starting and operating the machine. Follow manufacturers recommendations for operation and maintenance to maintain your engine warranty. REPAIR AND MAINTENANCE/GENERAL Carriage/Tightness of Nuts & Bolts Check four (4) bolts that mount chuck to the drive shaft flange of the McL-12HB initially, then check each week when in continuous use. Each bolt should have lock washer. Tighten as needed. Check four (4) bolts that mount hydraulic motor to the McL-12HB carriage initially, then check each week when in continuous use. Tighten as needed. Check nine (9) bolts that hold sprocket cover to the back of the McL-12HB initially, then once each month when in continuous use. Tighten as needed. Check all hydraulic fittings initially, then check each week when in continuous use. Tighten as needed, taking care not to twist hoses from original positions. Check nuts (4) on cam rollers initially, then once each month when in continuous use. Tighten as needed. Carriage/Lubrication Approximately every 50 hours of operation, lubricate the chain drive of the McL-12HB. To do so, use the grease fitting on the top of the chain guard. Use about 5-10 pumps with spindle rotating slowly. Do not over lubricate the chain. Also, periodically grease the cam rollers with all purpose bearing grease. Carriage/Quick Disconnects Wipe each Quick Disconnect with a clean rag to remove excess oil and dirt. Always return covers to Quick Disconnects when machine is not in use. Carriage/Miscellaneous Once a month, inspect the two (2) hitch pins (also called Auger Pins, R-Clips, R-Pins) that hold the clevis pins in place. Replace if worn or damaged. Also, check hitch pins that hold machine hold downs in place. Replace if worn or damaged. After each boring operation is completed, clean the carriage to remove dirt and mud. Use water if available. Always clean the unit before storage

3 SPECS & MAINTENANCE Dog Plate/General Maintenance Check all bolts on the dog plate initially, then once a week during continuous operation. Tighten as needed. When tightening bolts, test dog plate to ensure proper function. Lubricate all members of the dog plate, including the dog pins, initially, then each week during continuous use. A light machine oil or spray lubricant is recommended. It is also recommended that the dog plate be removed and cleaned periodically, especially after use in sticky clay conditions. Before each boring operation, adjust cylinders using the following steps: with the machine on the track, fully extend the cylinders. Make sure the dog pins are secure in their respective holes. Shut off power source before working on the machine. Loosen the nuts that lock the two set screws at the front of the dog plate. Tighten each of these set screws until the dog plate is held in place with no movement. Tighten the nuts to lock the set screws. Remove all tools and personnel from the area around the dog plate, restart the power source and test the dog plate. Readjust if necessary. Track/General Maintenance Check the rolling surfaces of the track for dirt or contamination. Clean as required. Tighten push plate bolts periodically. Always inspect bolts before boring begins. Inspect the track for fractures and reweld as necessary. Auger/General Maintenance Apply 30W-40W oil to both shank & socket of auger during the boring operation. Clean and coat couplings with light oil after every use. Examine auger after use for fractures and reweld as necessary. Cutting Heads/General Maintenance Examine all teeth and replace as necessary before use. Check all conical bits on rock heads for rotary freedom. Decal Identification Kit: J

4 OPERATION & SAFETY MANUAL Operation and Safety Manual E Call for a replacement Operation and Safety Manual. Free of Charge

5 HAZARD ALERT DECAL PLACEMENT DECAL SAFETY KIT PART NUMBER: E J J J J J J J

6 CARRIAGE ASSEMBLY 3.1.0

7 CARRIAGE ASSEMBLY I TEM# QTY. NUMBER DESCRIPTION 1 1 HD10001 Carriage Assembly 2 1 T Motor, Hydrauli c 4 U Screw, HC X U Washer, Lock, HD30610 Cylinder, Hydrauli c 4 1 HD30590 Valve, Hydrauli c 3 U Screw, HC X U Washer, Flat, U Nut, Lock, HD30050 Valve Mountin g Assembly 1 U Screw, HC X U Nut, Hex, HM00092 Gauge, Hydrauli c Pressure 6 U Screw, RHD 5-40 X U Washer, Lock U Nut, Hex HD12025 Sprocket Guard 8 U Screw, HC X.75 8 U Washer, Flat T Grease Fitting,.125 MNPT 1 T Fitting, Plug,.50 MNPT 1 Silicone Sealer Taper Lock Bushing 3 U Screw, X U Washer, Lock, U Screw, Set, 3/8-16 X Sprocket, 45 Tooth, # Drive Chain, #60 I TEM# QTY. NUMBER DESCRIPTION Sprocket, 16 Toot h 2 U Screw, Set, X Bearing Lock Nut w/ Cross Clamp Obsolete w/ # Thrust Bearing Cup, Thrust Bearing 16 2 HD10095 Hold Down Assembly 4 R Pin, R-Clip 17 4 W Cam Roller Bearing 4 U Nut, Jam T Grease Fitting,.188 Stud HD20082 Spacer, Cam Roller Shaft Seal 20 1 HD11010 Drive Shaft 1 HD11011 Key, SQ..50 X Chuck Assemblies HD40050 Chuck, Hex HD41050 Chuck, Hex HD42050 Chuck, Hex HD44050 Chuck,.813 Hex 5 U Screw, HC X 1.00 Gr. 8 U Washer, Lock E Manual Box, Safety 3 U Screw, HC X.75 6 U Washer, Flat U Nut, Hex Silicone Sealant 23 1 E Manual, Safety & Operation - McL-12HB 3.1.0

8 DOG PLATE ASSEMBLY 4.1.0

9 DOG PLATE ASSEMBLY I TEM# QTY. NUMBER DESCRIPTION 1 1 HD21000 Main Body Assembly 2 2 HD20060 Dog Pin 3 2 U Screw, Set X U Spring, Compression 5 1 HD20070 Foot Pedal 6 2 HD20080 Linkage Arm 7 1 U Screw, Hex Cap X U Screw, Hex Cap X U Nut, Hex U Screw, Hex Cap X HD20100 Bushing 12 3 U Washer, Flat U Screw, Set X T Clevis Pin 15* 2 R Auger Clip 16 2 U Screw, Sq X HD20082 Spacer 18 1 HD20085 Dog Plate Latch * Not Shown 4.1.0

10 MASTER TRACK ASSEMBLY 5.1.0

11 MASTER TRACK ASSEMBLY I TEM# QTY. NUMBER DESCRIPTION 1 1 HD ' Master Trac k 2 1 HD70060 Push Plate 3 2 U Screw, HC X U Nut, Hex HD71000 Stake, Track Hold-Down 6 1 HD50000 Saddle Optional Equipment (available upon request): HD ' Master Trac k HD ' Extension Trac k 7 HD " Adapter Kit, Steel HD " Adapter Kit, Steel HD " Adapter Kit, Steel HD " Adapter Kit, Steel HD " Adapter Kit, Steel 8 HD14010P 10" Adapter Kit, PVC HD14008P 8" Adapter Kit, PVC HD14006P 6" Adapter Kit, PVC HD14005P 5" Adapter Kit, PVC HD14004P 4" Adapter Kit, PVC 9 HD93000 Shoe Kit HD94100 Spacer Kit, 10" Adapter HD94200 Spacer Kit, 8" Adapter HD94300 Spacer Kit, 6" Adapter HD94400 Spacer Kit, 4" Adapter 10 U Screw, Sq. Hd Set X

12 HOSES & FITTINGS 6.1.0

13 HOSES & FITTINGS I TEM# QTY. NUMBER DESCRIPTION 1 1 T Motor, Hydrauli c 2 2 HD30610 Cylinder, Hydrauli c 3 1 HD30590 Control Valve 4 2 HM00092 Pressure Gauge Fittings 10 2 T Union 08MB-10MJ 11 2 T Union, 12Mb-10MJ 12 4 T Elbow, 90, 06MP-08MJ 13 2 T Tee, 08MJ-08MJ-08MJ 14 1 T Union, 04FP-04MJ 15 2 T Union, 08MB-08MJ 16 2 T Union, 12MP-12MJ 17 2 T Elbow, 45, 12MP-12FP 18 1 T Quick Disc, Male, 12FP 19 1 T Quick Disc, Female, 12FP 20 2 T Cap, Quick Disc. Hoses 30 2 TH00150 Valve (Rotation Spool) - Motor 31 1 TH00158 Valve (Thrust Spool) - Cyl. Rod Te e 32 1 TH00157 Valve (Thrust Spool) - Cyl. Base Te e 33 1 T H00153 Tee - Cylinder Rod (Right Side) 34 1 T H00154 Tee - Cylinder Rod (Left Side) 35 1 T H00155 Tee - Cylinder Base (Left Side) 36 1 T H00156 Tee - Cylinder Base (Right Side) 37 1 TH00159 Valve, Inlet Tee - Gauge 38 1 TH00160 Valve, Inlet to Bulkhead - Pressure 39 1 TH00161 Valve, Return to Bulkhead - Return Item #2 - Serial Number: 12HB and Later Item #3 - Serial Number: 12HB and Later 6.1.0

14 CONTROL VALVE OPERATION Thrust Gauge Rotation Lever Thrust Lever 7.0.0

15 HYDRAULIC CYLINDER HYDRAULIC CYLINDER I TEM# QTY. NUMBER DESCRIPTION 1 1 Consult Factory 2 2 T Clevis Pin 3 2 R R-Clip Pin HD Seal Kit 12 1 Consult Factory 13 1 Consult Factory 1 Consult Factory 7.1.0

16 HYDRAULIC VALVE COMPONENTS For Seal Kit and Relief Valve, please consult factory

17 HANDLE KIT, HYDRAULIC VALVE Hydraulic Valve Part No.: HD30590 Handle Kit Part No.: *Includes Handle and Linkage 2 required

18 SEAL KIT, HYDRAULIC MOTOR SEAL KIT, HYDRAULIC MOTOR McL-12H ZIPPER I TEM# QTY. NUMBER 1 1 T T DESCRIPTION Seal Kit, Shaft Seal Kit, Rear Motor 7.4.0

19 REPAIR INSTRUCTIONS WARNING: Moving parts. Keep all guards in place. Shut down engine before service or maintenance. Being caught in machinery may cause serious injury. WARNING: High Pressure. Leaking hydraulic fluid under pressure can penetrate and cause serious injury. Check for leaks with cardboard. Relieve pressure before working on any system. CONTROL VALVE SETTINGS: THRUST AND ROTATION RELIEF VALVE SETTING: 2500 PSI (173 BAR) BEFORE DISASSEMBLY: 1. CHECK THE POWER SOURCE FOR THE FOLLOWING: A. Proper pressure and flow rate. B. Correct fluid level and filtration. 2. SHUT DOWN THE POWER SOURCE. RELIEVE SYSTEM PRESSURE AND DISCONNECT MACHINE FROM THE POWER SOURCE. FAILURE TO FOLLOW THESE STEPS PRIOR TO MACHINE DISASSEMBLY MAY RESULT IN SERIOUS INJURY. STEP 1: CHAIN COVER REMOVAL AND INSPECTION - WARNING: Crushing weight can cause serious injury. Place machine on solid surface to prevent rollover or falling. WARNING: Do not modify this machine. Use only authorized McLaughlin repair parts. Failure to comply can result in serious injury. Service this equipment according with maintenance instructions in this manual Remove bolts and lockwashers from chain cover (Photo #1). 2. Pull cover away from the machine frame. Some resistance may be encountered because of silicone sealant. 3. Inspect cover for cracks and dirt. 4. Wipe cover interior clean and scrape old silicone from cover and machine frame. 5. TO BEGIN REASSEMBLY - Apply a bead of silicone on the flange of cover (Photo #2). 6. Carefully set cover in place. Insert bolts and tighten. 7. Apply a heavy bead of silicone around the top of cover and any visible cracks that may allow dust and dirt to get in the cover. 8. Wipe off excess silicone and allow to dry before handling or using the boring machine

20 STEP 2: CHAIN AND SPROCKET REMOVAL AND REPLACE- MENT 1. Remove chain cover (Ref. Step #1). 2. Remove three (3) bolts from tapered bushing (Fig. 1, #8) of large sprocket (Fig. 1, #9). 3. Loosen the set screw in the bushing. 4. Screw three (3) of the bolts into the threaded holes of the tapered bushing (Photo #3). 5. Tighten these bolts until sprocket can be moved on the shaft. Alternate tightening of bolts. Do not tighten one bolt more than the other. 6. Loosen, but do not remove, the set screws in small sprocket. (Fig. 1, #11). 7. Using screwdriver, push sprocket away from machine frame. 8. Pull both sprockets away from the frame to create a 1 gap. 9. Find the master link of the chain by locating the clip used to hold the master link in place. This clip will be on the side of the chain farthest from the machine (Photo #4). 10. Remove clip and master link and then remove chain. 11. If only replacing the chain, go to Step #2, Item #19 to begin reassembly. 12. Remove both sprockets. 13. Clean and inspect all parts for dirt, cracks, wear or damage. Replace parts as needed. 14. TO BEGIN REASSEMBLY - Slip the small sprocket onto the motor shaft. 15. Slide the large sprocket without the bushing onto the drive shaft. 16. Slide the tapered bushing onto the drive shaft and into the large sprocket. Align bushing with key on shaft. 17. Align the bolt holes between the sprocket and bushing. 18. Slide both sprockets onto the shaft until there is a gap of approximately 1 between the sprockets and the machine frame. 19. Place chain on the sprockets. 20. Slip master link and matching plate onto chain (Photo #5). 21. Slip clip over the posts of the master link. 22. Check master link and chain to make certain of fit and that the master link clip is secure Slide both sprockets toward machine frame. Position the large sprocket so it is approximately 1/4 from the machine frame. 24. Insert three (3) bolts into large sprocket bushing: DO NOT TIGHTEN. Fig

21 STEP 2 (Con t) 25. Tighten the bolts on the large sprocket bushing. Continue to check distance from the machine frame. 26. Check the chain alignment. Move the small sprocket as required to align the chain. 27. Tighten both setscrews of the small sprocket. 28. Apply grease to the chain. 29. Install chain cover (Ref. Step #1). STEP 3: SHAFT AND BEARING REMOVAL 1. Remove chain cover (Ref. Step #1). 2. Remove large sprocket (Ref. Step #2). 3. Using a screwdriver, pry up the tabs of the spanner washer (Fig. 1, #13) that have been bent into the slots of the spanner nut (Fig. 1, #12). 4. Unscrew the spanner nut from the drive shaft. Make sure that the shaft threads are clean before attempting to unscrew the spanner nut (Photo #6). 5. Slide the spanner washer off of the drive shaft (Photo #7). 6. Grasp the flange of the drive shaft and gently pull the shaft out toward the front of the machine. (Photo #8). 7. Remove the tapered roller bearing (Fig. 1, #14) from the rear end of the shaft tube. 8. To remove the oil seal and front bearing, use a piece of soft steel or aluminum tubing (2 o.d. x 8-10 ). Slide this tube into the drive shaft housing tube until it makes contact with the bearing. Gently push the bearing until it touches the oil seal. Lightly tap the end of the soft steel tube until the oil seal and bearing are released. 9. Inspect all components for dirt, cracks, wear or damage. Replace parts as needed. 10. TO BEGIN REASSEMBLY - Repack the bearings with wheel bearing grease. Make sure all slots are filled with new grease. 11. Slip each bearing into the drive shaft tube until it stops. Slowly turn the bearings to ensure smooth movement. 12. Install the seal by holding a flat piece of smooth metal or wood against the face of the seal and uniformly tapping the piece of wood or metal with a hammer. Hammer until face of the seal is flush with the end of the tube, in all directions. Do not hammer directly against the seal. 13. Grease the input shaft and insert the drive shaft into the drive shaft tube. Take care not to damage the seal. 14. Slip spanner washer onto the end of the shaft until it stops. Note that the inside diameter of the spanner washer is keyed with a tab. Align the tab with the shaft keyway. The outside diameter tabs

22 should face toward the back of the machine. 15. Screw the spanner nut onto the end of the shaft. The bevel on the nut should be toward the front of the machine. 16. Tighten the spanner nut until there is no end to end (axial) play in the shaft. The shaft will turn with some resistance. 17. Using a screwdriver, bend tabs of spanner washer into slots of the spanner nut. Bend all tabs that line up (may be one or more than one). 18. Set the keys for each sprocket into the slot of the motor shaft and the drive shaft. 19. Reassemble sprockets and chain (Ref. Step #2). 20. Install chain cover (Ref. Step #1). Fig. 2 STEP 4: HYDRAULIC MOTOR REMOVAL AND REPLACE- MENT 1. Remove chain cover (Ref. Step #1). 2. Remove small sprocket from machine (Ref. Step #2). 3. Disconnect hoses at the hydraulic motor ports (Fig. 4). There will be a small amount of hydraulic oil in the line. Allow the oil to drain into a rag. Clean up any spillage. 4. Loosen the four (4) bolts and lockwashers that hold the hydraulic motor (Fig. 2) in place. 5. While supporting the motor with one hand, remove the bolts and set motor aside (Photo #10). 6. Inspect all components for dirt, cracks, wear or damage. 7. TO BEGIN REASSEMBLY - set motor into pilot hole of the machine frame. 8. While holding motor with one hand, start the bolts into the threaded holes of the machine frame by hand. 9. Tighten the two bolts closest to the top of the machine first. (Photo #11). 10. Tighten the other two bolts. 11. Check all four bolts for tightness. 12. Reassemble small sprocket to motor shaft and add chain (Ref. Step #2). 13. Install chain cover (Ref. Step #1) STEP 5: CYLINDER REMOVAL AND REPLACEMENT 1. Loosen the nuts of the dog plate cylinder brackets (Fig. 3). 2. Screw the 1/2 square head bolts (Fig. 3) away from the cylinder clevis. 3. Remove the hitch pin (R-pin, R-clip, Auger Clip) from the dog plate clevis pin. 4. Remove the clevis pin (Photo #12). 5. Swing the dog plate away from the cylinder clevis. 6. Remove the hitch pin from the clevis pin at the 8.4.0

23 front of the machine frame. 7. Remove the clevis pin. 8. Unscrew Fig. 3 the hydraulic line nut of the metal hydraulic line that goes to the front of the cylinder to be removed. Catch oil in a rag. Clean up oil from floor, work area and machine. 9. Loosen the nut on the other end of the hydraulic line. This nut is connected to a tee (Fig. 4, #18). 10. Rotate the metal line 90 degrees so that it is pointed up. 11. Disconnect the hydraulic line nut that connects to the rear port of the cylinder. Catch oil in a rag. Clean up oil spillage. 12. Remove the fitting from the rear port of the cylinder (Photo #13). 13. Tilt the cylinder up at the free end and pull cylinder toward the front of the machine (Photo #14). 14. Remove the 90 degree hydraulic fitting from the front cylinder port. 15. Clean all fittings that have been removed or disconnected. Replace all damaged fittings. 16. Slide the new cylinder into place. Note that the rod end must be toward the back of the machine. 17. Apply pipe sealant to the front port fitting. DO NOT ALLOW PIPE SEALANT TO GET INTO THE INTERIOR OF THE FITTING. 18. Screw in fitting and tighten. Fitting should point toward opposite end of the cylinder. 19. Slide rod end of the cylinder into the hole of the machine frame with the ports pointed up. 20. Slide front clevis onto machine frame. 21. Rotate the metal hydraulic line to line up parallel with the cylinder. 22. Reconnect metal line to front port fitting. 23. Tighten nut on the other end of the hydraulic line onto the tee (Fig. 4, #18). 24. Apply pipe sealant to the rear port fitting. 25. Screw fitting into port and tighten. 26. Connect hose to fitting. 27. Align the holes of the clevis with frame hole and slip clevis pin into front cylinder clevis. Add hitch pin. 28. Rotate the dog plate and align the hole of the dog plate with the holes of the rod end clevis. Add hitch pin. 29. Check all hydraulic fittings (entire hydraulic system). Tighten as required. 30. Set the machine on the track. 31. Connect the boring machine to a hydraulic power source. Start the power source (refer to power source operators manual for safe operating instructions). 32. Make sure the dog pins of the dog plate are both locked into place. 33. Extend the cylinders to full stroke. 34. Shut off the power source. 35. Screw out the 1/2 square head bolts on the dog Fig

24 plate cylinder brackets until they make contact with the cylinder clevis. 36. Simultaneously tighten each of the square head bolts against the cylinder pins. 37. Tighten the nuts (Fig. 3, #9) to secure the square head bolts. 38. Start the power source and test machine function. Readjust as necessary, making sure that the power source is always off when any adjustments are made. Fig

25 WARRANTY RETURN GOODS POLICY LIMITED WARRANTY The Manufacturer warrants its products to be free from defects in material and workmanship for a period of twelve months from the date of shipment from the factory. Hole Hammer pistons, bodies, and nose pieces are warranted to be free from defects in material and workmanship for a period of three years from the date of shipment from the factory. The Manufacturer shall not be responsible for any damage resulting to or caused by its products by reason of installation, improper storage, unauthorized service, alteration of the products, neglect or abuse, or use of the product in a manner inconsistent with its design. This warranty does not extend to any component parts not manufactured by Manufacturer; however, Manufacturer s warranty herein shall not limit any warranties made by manufacturers of component parts which extend to Buyer. Claims for defects in material and workmanship shall be made in writing to Manufacturer within ten days of discovery of defect. Manufacturer may either send a service representative or have the product returned to its factory at Buyer s expense for inspection. Upon notification of defect, Manufacturer will issue a return goods authorization number to Buyer. The return goods authorization number must accompany the product returned. If judged by the Manufacturer to be defective in material or workmanship, the product will be replaced or repaired at the option of the manufacturer, free from all charges except authorized transportation. Buyer shall be responsible for all maintenance services consisting of lubrication and cleaning of equipment, replacing expandable parts, making minor adjustments, and performing operating checks, all in accordance with procedures outlined in Manufacturer s maintenance literature. THE FOREGOING WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES AND NO REPRESENTA- TIONS, GUARANTEES, OR WARRANTIES, EX- PRESS OR IMPLIED, (INCLUDING BUT NOT LIM- ITED TO A WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE), ARE MADE BY THE MANUFACTURER IN CONNECTION WITH THE MANUFACTURE OR SALE OF ITS PRODUCTS. NO EMPLOYEE, DISTRIBUTOR, OR REPRESENTATIVE IS AUTHORIZED TO CHANGE THIS WARRANTY ON BEHALF OF MANUFACTURER THE REMEDIES OF BUYER SET FORTH HEREIN ARE EXCLUSIVE AND ARE IN LIEU OF ALL OTHER REMEDIES. THE LI- ABILITY OF MANUFACTURER WHETHER IN CON- TRACT, TORT, UNDER ANY WARRANTY, OR OTHERWISE SHALL NOT EXTEND BEYOND ITS OBLIGATION TO REPAIR OR REPLACE, AT ITS OPTION ANY PRODUCT OR PART FOUND BY MANUFACTURER TO BE DEFECTIVE IN MATERIAL OR WORKMANSHIP. MANUFACTURER SHALL NOT BE LIABLE FOR COST OF INSTALLATION AND/OR REMOVAL OR BE RESPONSIBLE FOR DIRECT, IN- DIRECT, SPECIAL OR CONSEQUENTIAL DAMAGES OF ANY NATURE. GENERAL RETURNS OF MERCHANDISE 1. All returns must be pre-authorized A. Please call our parts department for an RGA number B. Please include RGA number on the outside of box C. Include any required paper work or special instructions D. Items returned without an RGA number will not be accepted 2. All returns are subject to a 20% restock charge. 3. Special items are non-returnable A. Non-stock parts B. Custom parts C. If you are unsure about a parts status when ordering, ask your McLaughlin representative if the item fits on of the above conditions. 4. Items must be returned within thirty days of original order date. 5. Items not returned within 30 days from the date of RGA is issued will not be accepted. 6. The item(s) must be in new condition. Used item(s) are not returnable. February 8,